﻿using System;
using System.Data.Linq;
using System.IO.IsolatedStorage;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using Microsoft.Live;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
using Notes.Model;
using Notes.ViewModels;

namespace Notes
{
    public class DBDataContext : DataContext
    {
        public DBDataContext(string connectionString)
            : base(connectionString)
        { }

        public Table<Note> Notes;
        public Table<Photo> Photos;
        public Table<Category> Categories;
    }

    public partial class App : Application
    {
		public readonly static string ClientId = "000000004809CEAE";
		public readonly static string FileName = "notes.txt";
        public readonly static string FolderName = "Alt Notes";
		
		public static IsolatedStorageSettings settings = IsolatedStorageSettings.ApplicationSettings;
        public static IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication();
		public static LiveConnectClient SkyDriveClient = null;
        public static LiveConnectSession SkyDriveSession = null;

        private static DBDataContext _db;
        public static DBDataContext db
        {
            get { return _db; }
        }

        private static MainViewModel _MainViewModel = null;
        public static MainViewModel MainViewModel
        {
            get
            {
                // Delay creation of the view model until necessary
                if (_MainViewModel == null)
                    _MainViewModel = new MainViewModel();

                return _MainViewModel;
            }
        }

        private static SyncViewModel _SyncViewModel = null;
        public static SyncViewModel SyncViewModel
        {
            get
            {
                // Delay creation of the view model until necessary
                if (_SyncViewModel == null)
                    _SyncViewModel = new SyncViewModel();

                return _SyncViewModel;
            }
        }

        private static EditViewModel _EditViewModel = null;
        public static EditViewModel EditViewModel
        {
            get
            {
                // Delay creation of the view model until necessary
                if (_EditViewModel == null)
                    _EditViewModel = new EditViewModel();

                return _EditViewModel;
            }
        }
        public static void ResetEditViewModel()
        {
            _EditViewModel = new EditViewModel();
        }

        /// <summary>
        /// Provides easy access to the root frame of the Phone Application.
        /// </summary>
        /// <returns>The root frame of the Phone Application.</returns>
        public PhoneApplicationFrame RootFrame { get; private set; }

        /// <summary>
        /// Constructor for the Application object.
        /// </summary>
        public App()
        {
            // Global handler for uncaught exceptions. 
            UnhandledException += Application_UnhandledException;

            // Standard Silverlight initialization
            InitializeComponent();

            // Phone-specific initialization
            InitializePhoneApplication();

            // Show graphics profiling information while debugging.
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // Display the current frame rate counters.
                Application.Current.Host.Settings.EnableFrameRateCounter = true;

                // Show the areas of the app that are being redrawn in each frame.
                //Application.Current.Host.Settings.EnableRedrawRegions = true;

                // Enable non-production analysis visualization mode, 
                // which shows areas of a page that are handed off GPU with a colored overlay.
                //Application.Current.Host.Settings.EnableCacheVisualization = true;

                // Disable the application idle detection by setting the UserIdleDetectionMode property of the
                // application's PhoneApplicationService object to Disabled.
                // Caution:- Use this under debug mode only. Application that disables user idle detection will continue to run
                // and consume battery power when the user is not using the phone.
                PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;
            }

            string DBConnectionString = "Data Source=isostore:/notes.sdf";

            // Create the database if it does not exist.
            using (DBDataContext db = new DBDataContext(DBConnectionString))
            {
                if (!db.DatabaseExists())
                {
                    db.CreateDatabase();
                }
            }
            _db = new DBDataContext(DBConnectionString);
		
		}

        // Code to execute when the application is launching (eg, from Start)
        // This code will not execute when the application is reactivated
        private void Application_Launching(object sender, LaunchingEventArgs e)
        {
        }

        // Code to execute when the application is activated (brought to foreground)
        // This code will not execute when the application is first launched
        private void Application_Activated(object sender, ActivatedEventArgs e)
        {
            // Ensure that application state is restored appropriately
            if (!App.MainViewModel.IsDataLoaded)
            {
                App.MainViewModel.LoadData();
            }
        }

        // Code to execute when the application is deactivated (sent to background)
        // This code will not execute when the application is closing
        private void Application_Deactivated(object sender, DeactivatedEventArgs e)
        {
            // Ensure that required application state is persisted here.
        }

        // Code to execute when the application is closing (eg, user hit Back)
        // This code will not execute when the application is deactivated
        private void Application_Closing(object sender, ClosingEventArgs e)
        {
        }

        // Code to execute if a navigation fails
        private void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // A navigation has failed; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        // Code to execute on Unhandled Exceptions
        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // An unhandled exception has occurred; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        #region Phone application initialization

        // Avoid double-initialization
        private bool phoneApplicationInitialized = false;

        // Do not add any additional code to this method
        private void InitializePhoneApplication()
        {
            if (phoneApplicationInitialized)
                return;

            // Create the frame but don't set it as RootVisual yet; this allows the splash
            // screen to remain active until the application is ready to render.
            RootFrame = new PhoneApplicationFrame();
            RootFrame.Navigated += CompleteInitializePhoneApplication;

            // Handle navigation failures
            RootFrame.NavigationFailed += RootFrame_NavigationFailed;

            // Ensure we don't initialize again
            phoneApplicationInitialized = true;
        }

        // Do not add any additional code to this method
        private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
        {
            // Set the root visual to allow the application to render
            if (RootVisual != RootFrame)
                RootVisual = RootFrame;

            // Remove this handler since it is no longer needed
            RootFrame.Navigated -= CompleteInitializePhoneApplication;
        }

        #endregion
    }
}